What cocktail is prepared using Whisky and sweet Vermouth and garnished with a cherry?

The cocktail made with whisky and sweet vermouth, garnished with a cherry, is known as a Manhattan. This classic drink is a staple in the cocktail repertoire, originating in the late 19th century. The Manhattan is primarily characterized by the balance between the whisky's robust flavor and the herbal sweetness of the vermouth, creating a rich, smooth profile. The cherry, often used as a garnish, adds a touch of sweetness and visual appeal to the cocktail.

The other options involve different ingredients or preparation methods. For example, a martini traditionally uses gin or vodka and dry vermouth, while an old fashioned is typically made with bourbon or rye whisky, sugar, and bitters, without vermouth. The Rob Roy is similar to the Manhattan but is made specifically with Scotch whisky instead of other types of whisky. Thus, the distinctive use of whisky and sweet vermouth with the cherry garnish firmly identifies the Manhattan as the correct choice.